Plans for major improvements to Gatwick Airport's ageing railway station are expected to be given the go-ahead by Crawley Borough Council.
An application to build a first-floor concourse and entrance area above platforms 5, 6 and 7 will be considered by the planning committee on Monday.
The station opened in 1958 and, despite reconstruction and renovation over the years, has found it increasingly difficult to cope with the ever-increasing passenger numbers.
The application would see platforms 5 and 6 widened, with new lifts and escalators fitted to platforms 3-7.
The new concourse would have a curved roof, while canopies would also be put up over platforms 3-7.
Alterations to the land east of the railway line - to include a two-storey 'back of house' building - would mean a public footpath would have to be diverted.
A report to the planning committee said the work would help to address issues affecting the operation of the station.